Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

Obituary note from our colleague José María Gabriel and Galán Moris.

The presence of Avena eriantha Durieu (Gramineae) in Valladolid province (Duero Basin, Spain) is reported. Besides data and photographs of the species are provided.

In this note, information about Allosorus tinaei (Tod.) Christenh. in A Coruña province is provided. The discovery is a novelty for that geographical area. Furthermore, a brief summary of the genus Allosorus in Galicia is given. Collected material has been deposited at the Herbarium SANT of the University of Santiago de Compostela.

The author reports the discovery at Akbou (Bejaia, NE-Algeria) of yellow ibicella native from the semi-desert areas of South America.

This research is focused on the study of the ecology, reproductive biology and population dynamic of service tree or sorb tree (Sorbus domestica L.), a rare species in Extremadura. The results showed that this species only appears in Villuercas, mainly in well-preserved forests. The total number of individuals currently in Extremadura is of 23, which are distributed into 5 isolated populations. Both sexual and vegetative regeneration were not identified. Consequently, the species in this region is seriously threatened. Thus, the implementation of urgent measures of conservation are required to preserve S. domestica populations.

Authors describe an observation of Pteris vittata L., in Numidia. This discovery allow us to highlight its distribution in Algeria.

Onopordum algeriense is a strict endemic species of the Algerian sector, limited more precisely to the hills and mountains of the Puits des Zouaves (Baïnem Forest). Given its very restricted distribution its conservation is essential. It is indeed strictly protected in Algeria by Executive Decree.The objective of this paper is to assess the population size and conservation status of Onopordum algeriense according to IUCN criteria as well as its vulnerability. Exhaustive sampling by the quadrat method was carried out in two sites in the Baïnem forest.In order to study the spatial distribution of the species, the method of Thiessen Polygons and Moran Index followed by a canonical correlation analysis was applied to elucidate the relationship between the environment variables and the spatial distribution of the species. The results revealed a trend towards aggregation.The population has a reduce size (1648 feet by 320 m2). Onopordum algeriense seems to be disturbed by the presence of wild boar and probably also by the presence of a beetle (the evil ketone). The particular conditions of its natural habitat do not seem indispensable to its survival but the absence of competitors in this habitat will, no doubt, represent a strong advantage. According to the adopted IUCN criteria, the species is Critically Endangered. If there is not conservation effort the future of the species seems uncertain also because of the pressure for urbanization in this area.

The endemic flora of Northeastern Algeria facing the threat of invasive plants. We established for the first time for the Skikda region, the lists (updated list and list of taxa to research) of endemic flora and naturalized species considered invasive in the Mediterranean, representing a potential threat to this flora, by conducting surveys at the level of twelve communes. This led to the identification of 64 endemic taxa more than half of which are in the updated list (38 taxa). These plants belong to 26 families, 46 genera and are divided into 50 species, 11 subspecies and 3 varieties. The Algerian-Tunisian endemics are the most abundant (30 taxa). 11 invasive species in the Mediterranean are naturalized in our region, 5 of which colonize natural environments particularly rich in endemic species. Acacia saligna, Carpobrotus edulis and Opuntia ficus-indica are the main threatening species of this biological richness.

In the present work, a naturalized population of Broussonetia papyrifera (L.) Vent located, for the first time, in the banks of the Tajo river (Toledo) is mentioned. Given the invasive potential of this species, the need for its control and monitoring is proposed.

The presence of Serapias vomeracea is confirmed in the province of Córdoba (Spain)